I've converted my waypoint file using GPS Babel from lowrance USR to GPX XML. Now copying data from my memory card to my garmin following the path User Data > Manage Data > Data Transfer I have two options, Merge from Card or Replace from Card, which do I pick?
The device is brand new I've not installed a waypoint or track on it yet so I guess maybe it doesn't matter which, I was just confused why there were two options and wasn't clear on the difference. I guess one adds data without affecting current data in memory while the other wipes old data completely out and replaces it with whats on the memory card?
After every trip I export from my unit to the card. I then make my name changes and icon changes in homeport and export back to the card and save on top of the original file. I then delete all waypoints from my unit and then insert the card and choose replace.
I've figured out which ones in homeport work with the 7600 series. Most of my waypoints are brush piles and timber so I use the single gree tree for brush and the single blue tree for timber. If you set them for something the unit doesn't support it changes the to the standard .